Demi Lovato Covers 'Seventeen' February 2012

On the problems she faced a year ago and just how bad it got: “I’m not gonna lie. I was self-medicating. I was doing things like drinking and using [drugs], like a lot of teens do to numb their pain.”

On how she’s doing today: “I don’t drink, I don’t do drugs, I don’t throw up after my meals, I don’t starve myself. There’s nothing that I do that I feel ashamed of.”

On who was there for her during the tough times: “There were two people [who were there for me]. No matter how many times we fight, we will always be in each others’ lives. [Miley Cyrus and I] are very strong-headed, so when we fight, it’s brutal and we’re like, ‘We’re never going to be friends again!’ Then two days later, we’re like, ‘I love you and I miss you!’ Selena and I, we never fight. She’s not a confrontational person at all. Both of them will never leave my life no matter what happens, because we’ve been through so much together.”